INT 10 - VIDEO - ATI EGA/VGA Wonder Super Switch - INSTALLATION CHECK
        AX = 5555h
Return: AX = AAAAh    if installed
        BX:CX -> ??? routine in SMS.COM resident portion
              -> data area in VCONFIG
Program: Super Switch (SMS.COM) is a video mode switch program supplied with
          ATI EGA Wonder. It also maps video mode 08h to 27h or 23h.
SeeAlso: INT 10/AH=00h,INT 2F/AX=6400h
Index:  screen saver;ATI Wonder SMS.COM

Format of data area:
Offset  Size    Description
 00h    DWORD   original INT 09 vector
 04h    DWORD   original INT 10 vector
 08h    DWORD   original INT 1C vector
 0Ch    WORD    screen saver state, 0=off, 1=on
 0Eh    WORD    blanking interval in clock ticks

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